A Hot Afternoon, A Quick Answer

That afternoon the sun was brutal. I was up on the roof working on a new HVAC unit, sweat running into my eyes, shirt stuck to my back. I opened the manual, but the wiring diagram didn’t match what I had in front of me. The picture showed one setup, but the block on this unit looked different.

I scratched my head. Normally I’d call my manager. He’s been at this way longer than me. But half the time he’s busy talking to a customer or handling something else. My other option was to dig through a bunch of PDFs on my phone, scrolling forever, trying to find the right page. Standing there in the heat, tools in my hand, it felt like I’d be wasting the whole afternoon.

I pulled out my phone and tried that new AC Logics we’ve been using. I typed: “This unit has a VFD motor—how do I wire it for three-phase power?”

The answer came fast, step by step. Simple. Clear. At the end it even said: “Check the rotation direction before you finish.”

I followed the steps, wired it up, and hit the power. The motor started smooth, no problem.

I tightened the panel, wiped my face, and let out a breath. The job was done. What could’ve been a long, hot mess turned into a quick fix.